Thomas Rhett attended the Celebration of Caring Gala over the weekend, hosted by Peyton Manning to raise funds for the Pediatric Intensive Care Unit at Peyton Manning Children's Hospital at St. Vincent. Rhett was a performer at the event at Bankers Life Fieldhouse in Indianapolis, Ind., and invited the Former Colts quarterback to join him for a special collaboration.

As he launched into a performance of 1995's "That Ain't My Truck" on Saturday night (March 10), Manning stepped up to help with the chorus. Rhett even stepped away from the mic to give Manning the lead on the song, which was originally recorded by the country singer's father, Rhett Akins.